Tamron 28-75 vs Tokina 28-70/80

I have the Tamron 28-75 and love it. I had a Tokina 28-80 2.8 and hated it. The Tokina is built like a tank but the ghosting at 2.8 and even 4.0 was horrible. It cleared up by 5.6. The Tamron is lighter and is sharp, even at 2.8. Maybe I had a bad copy of the Tokina. I shoot with a Nikon d700.